Insects and Spiders - native

Western Cedar Borer (Trachykele blondeli) on Aug 24, 2023

Originally reported as Emerald Ash Borer (Agrilus planipennis)

Submitter has sample

Description of specimen

Beetle about 2cm long <1cm wide with metallic green exoskeleton.

Commentary

Hi, thanks for the report. This is not EAB. This is a common lookalike, the western cedar borer. It attacks and feeds on dead or dying western red cedar. It is not considered a pest. See #4 on ODA's EAB look-alike guide: https://www.oregon.gov/oda/programs/IPPM/SurveyTreatment/Documents/EABLookAlikes.pdf

Here is some more info on western cedar borer and other woodborers from Oregon Department of Forestry:
https://www.oregon.gov/odf/Documents/forestbenefits/Woodboringbeetles.pdf

Wyatt Williams
Aug. 24, 2023, 8:13 a.m.

Resources

Western Cedar Borer information on iNaturalist and a guide to wood boring beetles in Oregon from the Oregon Department of Forestry.

Location

I found it dead in my car. Which is mostly in a residential neighborhood in NE Portland. I was driven to the coast recently, however.

Expert Reviewer

Wyatt Williams, Ph.D.
Wyatt Williams, Ph.D.

Invasive Species Specialist

Oregon Department of Forestry

Private Forests Division

2600 State St. Bldg. D

Salem, OR 97310-0340



Office: 503-945-7472

wyatt.williams@oregon.gov

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